Graph doesn't show (anymore)

I'd like to mention that the Graph has stopped displaying for a couple weeks now, as shown below.
The issue was observed on Google Chrome browser, both PC and Android device. All projects won't show the graph
when hitting the URL: https://gitlab.com/username/projectname/network/develop

I made sure my projects are not empty, they actually have lots of commits. All projects have the same issue. I checked for duplicated issues, sorry if I missed one.